XTCE12 — Alternate approach to xs:positiveInteger and xs:nonNegativeInteger

The XTCE Schema uses two XSD types that cause issues for code generators. The xs:positiveInteger and xs:nonNegativeInter end up with things like the "BigInteger" class in the generated code mapping, although the ranging capability is lost. This is not convenient for implementations.

Propose to define a local type for positive and non-negative integers

To support a number of other changes and this issue, add two new types to the XTCE schema:

<simpleType name="NonNegativeLongType">
<annotation>
<documentation>XTCE-specific replacement for xs:nonNegativeInteger which more cleanly maps to native data types.</documentation>
</annotation>
<restriction base="long">
<minInclusive value="0"/>
</restriction>
</simpleType>

<simpleType name="PositiveLongType">
<annotation>
<documentation>XTCE-specific replacement for xs:positiveInteger which more cleanly maps to native data types.</documentation>
</annotation>
<restriction base="long">
<minInclusive value="1"/>
</restriction>
</simpleType>